16957240 has 16 divisors (see below), whose sum is σ = 38153880. Its totient is φ = 6782880.

The previous prime is 16957201. The next prime is 16957247. The reversal of 16957240 is 4275961.

It is a junction number, because it is equal to n+sod(n) for n = 16957196 and 16957205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16957247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211926 + ... + 212005.

Almost surely, 2^16957240 is an apocalyptic number.

16957240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16957240 is an abundant number, since it is smaller than the sum of its proper divisors (21196640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16957240 is a wasteful number, since it uses less digits than its factorization.

16957240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423942 (or 423938 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 16957240 is about 4117.9169491382. The cubic root of 16957240 is about 256.9123937448.

The spelling of 16957240 in words is "sixteen million, nine hundred fifty-seven thousand, two hundred forty".